Sewage treatment siphon filter

Abstract

The utility model belongs to sewage treatment technical field especially is involved in a kind of sewage treatment siphon filter.The technology includes the bottom plate of horizontal arrangement, and the bottom plate top is installed with main filter tank, and main filter tank right side is installed with auxiliary filter tank, and ceramic membrane is installed in main filter tank by partition, and partition and ceramic membrane divide the internal space of main filter tank into first cavity and second cavity, and filter assembly divides the internal space of auxiliary filter tank into third cavity and fourth cavity, and connecting pipe is installed between the top of second cavity and the top of fourth cavity, and valve is installed on connecting pipe, and backwater pipe is installed between the bottom of second cavity and third cavity, and water pump is installed on the side wall of auxiliary filter tank, and the front side wall of auxiliary filter tank is provided with water pipe, which is communicated with third cavity.The utility model in the present application, the clean water in third cavity is pumped back into main filter tank by water pump, and the sewage in second cavity passes through ceramic membrane reversely, and the impurities adhered on ceramic membrane are cleaned.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment technology, and in particular relates to a siphon filter for wastewater treatment. Background Technology

[0002] Wastewater treatment equipment, as the core equipment and system for purifying wastewater and meeting discharge or reuse requirements, primarily functions to remove suspended particles, organic pollutants, nitrogen and phosphorus nutrients, and heavy metals from wastewater through physical, chemical, or biological treatment technologies. Among these, ceramic membranes, as asymmetric separation membranes made from inorganic ceramic materials using precision processes, exhibit unique advantages in wastewater treatment. Their membrane surface is covered with numerous micron-sized pores. Under pressure, as the feed liquid flows along the inside / outside of the membrane tube, small molecules can pass through the pores for separation, while large molecules are retained, thus achieving multiple objectives such as substance separation, solution concentration, product purification, and pollution control.

[0003] However, ceramic membranes face the challenge of membrane fouling during long-term operation. The membrane pores gradually become clogged with contaminants, leading to a significant decrease in membrane flux and consequently affecting treatment efficiency and system stability. To restore membrane performance, regular cleaning and maintenance of the ceramic membrane are necessary. Traditional cleaning methods typically use chemical cleaning agents to prepare a cleaning solution, which is then circulated within the membrane system by a circulation pump to dissolve or remove contaminants from the membrane surface and pores. However, this method has significant limitations: the cleaning cycle is long, and it is difficult to completely restore membrane flux. Utility Model Content

[0004] The purpose of this invention is to provide a siphon filter for sewage treatment, which has a simple structure and cleans the ceramic membrane by allowing clean water to pass through it in reverse.

[0005] The aforementioned siphon filter for wastewater treatment includes a horizontally arranged base plate, a main filter tank installed on top of the base plate, and a secondary filter tank installed to the right of the main filter tank. The main filter tank is located above the secondary filter tank. A ceramic membrane is installed in the main filter tank through a partition, and the partition and the ceramic membrane divide the internal space of the main filter tank into a first cavity and a second cavity. A filter assembly for secondary filtration of wastewater is installed in the secondary filter tank, and the filter assembly divides the internal space of the secondary filter tank into a third cavity and a fourth cavity. An inlet pipe is installed at the top of the first cavity, and a wastewater pipe is installed at the bottom of the first cavity. A connecting pipe is installed between the top of the second cavity and the top of the fourth cavity, and a valve is installed on the connecting pipe. A return water pipe is installed between the bottom of the second cavity and the third cavity. A water pump is installed on the side wall of the secondary filter tank, and a clean water pipe communicating with the third cavity is opened on the front side wall of the secondary filter tank.

[0006] Furthermore, there are four partitions, which are respectively fixed to the inner wall of the main filter tank and the ceramic membrane. The internal space of the partition is a second cavity, and the cavity between the outer side of the partition and the left and right inner walls of the main filter tank is a first cavity.

[0007] Furthermore, the filter assembly includes a filter screen with a ring structure, which is vertically fixed in the secondary filter tank. The internal space of the filter screen is a fourth cavity, and the space between the outer wall of the filter screen and the secondary filter tank is a third cavity.

[0008] Furthermore, a base is installed at the bottom of the main filter tank, the height of which is equal to that of the secondary filter tank, and the main filter tank is fixed on the top of the base.

[0009] Furthermore, the left end of the connecting tube is inserted into the bottom of the second cavity.

[0010] Furthermore, the right end of the return water pipe is inserted into the bottom of the third cavity, and the water pump is installed at the bottom of the left side wall of the secondary filter tank.

[0011] Furthermore, pipe clamps are installed on the right side wall of the main filter tank and the top of the secondary filter tank, with connecting pipes passing through the pipe clamps.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In this invention, wastewater enters the main filtration tank and remains in the first cavity. It undergoes preliminary filtration through a ceramic membrane. The water that has undergone preliminary filtration in the second cavity is then discharged into the secondary filtration tank through a siphon effect. The water undergoes secondary filtration after passing through a filter screen. The filtered clean water is then discharged through a clean water pipe, completing the wastewater filtration. A water pump then pumps the clean water in the third cavity back into the main filtration tank. The wastewater in the second cavity passes through the ceramic membrane in reverse, cleaning the impurities attached to the ceramic membrane. Finally, the wastewater is discharged from the main filtration tank through a wastewater pipe, completing the backwashing of the ceramic membrane. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 for Figure 1 Diagram showing the operational status of the main filtration tank for wastewater filtration.

[0016] Figure 3 for Figure 1 Diagram showing the operational status of the main filter tank during backwashing;

[0017] Figure 4 for Figure 1 Front view;

[0018] The components in the diagram are named as follows: 1. Sewage pipe; 2. Main filter tank; 3. Ceramic membrane; 4. Inlet pipe; 5. Baffle plate; 6. Valve; 7. Connecting pipe; 8. Pipe clamp; 9. Return water pipe; 10. Secondary filter tank; 11. Filter screen; 12. Base plate; 13. Water pump; 14. Base; 15. Clean water pipe. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0020] Example 1

[0021] This embodiment describes a siphon filter for wastewater treatment, such as... Figures 1 to 4 As shown, it includes a horizontally arranged base plate 12, a main filter tank 2 installed on the top of the base plate 12, a secondary filter tank 10 installed on the right side of the main filter tank 2, the main filter tank 2 is installed on the left side of the base plate 12, and the secondary filter tank 10 is installed on the right side of the base plate 12.

[0022] The main filter tank 2 is located above the secondary filter tank 10. The height of the main filter tank 2 is higher than that of the secondary filter tank 10. After the sewage is filtered by the ceramic membrane 3, it enters the second cavity. The water in the main filter tank 2 flows into the secondary filter tank 10 through the connecting pipe 7 by the siphon effect.

[0023] A ceramic membrane 3 is installed in the main filter tank 2 through a partition 5. The partition 5 and the ceramic membrane 3 divide the internal space of the main filter tank 2 into a first cavity and a second cavity. The space on the left and right sides of the ceramic membrane 3 is the first cavity, and the space on the upper and lower sides of the ceramic membrane 3 and between the partitions 5 on the left and right sides is the second cavity.

[0024] The filter screen 11 has a ring-shaped structure and is vertically fixed inside the secondary filtration tank 10. The upper end of the filter screen 11 is fixed to the upper inner wall of the secondary filtration tank 10, and the lower end is fixed to the lower inner wall of the secondary filtration tank 10. After the water that has been initially filtered enters the interior of the filter screen 11, it passes through the filter screen 11 and undergoes secondary filtration. The interior space of the filter screen 11 is a fourth cavity, and the space between the outer wall of the filter screen 11 and the secondary filtration tank 10 is a third cavity. After the water that has been initially filtered flows into the secondary filtration tank 10, it remains in the fourth cavity, passes through the filter screen 11, enters the third cavity, and finally exits the secondary filtration tank 10 through the purified water pipe 15. This section as a whole constitutes a filter assembly for secondary filtration of wastewater.

[0025] The filter assembly divides the internal space of the sub-filter pool 10 into a third cavity and a fourth cavity. The internal space of the filter screen 11 is the fourth cavity, and the space between the outer side of the filter screen 11 and the sub-filter pool 10 is the third cavity.

[0026] The top of the first cavity is fitted with an inlet pipe 4, which is vertically installed at the top of the main filter tank 2 and connected to the first cavity. Wastewater enters the first cavity of the main filter tank 2 through the inlet pipe 4.

[0027] A sewage pipe 1 is installed at the bottom of the first cavity. The sewage pipe 1 is horizontally installed on the left side wall of the main filter tank 2. The waste liquid after backwashing is discharged from the main filter tank 2 through the sewage pipe 1.

[0028] A connecting pipe 7 is installed between the top of the second cavity and the top of the fourth cavity. The left end of the connecting pipe 7 is vertically inserted into the top of the main filter tank 2 and enters the second cavity. The right end of the connecting pipe 7 is vertically inserted into the top of the secondary filter tank 10 and enters the fourth cavity. Wastewater that has been pre-filtered by the ceramic membrane 3 flows into the secondary filter tank 10 through the connecting pipe 7.

[0029] A valve 6 is installed on the connecting pipe 7. The valve 6 is used to control the opening and closing of the connecting pipe 7 to prevent clean water from flowing out of the main filter tank 2 through the connecting pipe 7 during backwashing.

[0030] A return water pipe 9 is installed between the bottom of the second cavity and the third cavity. A water pump 13 is installed on the side wall of the secondary filter tank 10. The water pump 13 pumps the clean water in the secondary filter tank 10 back into the main filter tank 2 to backwash the ceramic membrane 3.

[0031] A water purification pipe 15 communicating with the third cavity is provided on the front side wall of the secondary filter tank 10. The clean water after secondary filtration in the secondary filter tank 10 is discharged from the secondary filter tank 10 through the water purification pipe 15.

[0032] In this embodiment, during normal wastewater filtration, wastewater flows into the main filter tank 2 through the inlet pipe 4 and is stored in the first cavity. The wastewater enters the ceramic membrane 3 through the vertical sidewall and then flows out through the horizontal sidewall, completing the first filtration of the wastewater. The water after preliminary filtration flows into the second cavity. The main filter tank 2 is located on the secondary filter tank 10. Through the siphon effect, the water in the second cavity is sent into the secondary filter tank 10 through the connecting pipe 7 and stored in the fourth cavity. The water undergoes secondary filtration through the filter assembly. The water after secondary filtration enters the third cavity and is finally discharged through the clean water pipe 15.

[0033] During backwashing, valve 6 is closed and water pump 13 is started. The clean water remaining in the third cavity or external clean water is pumped into the main filter tank 2 through the return water pipe 9 and stored in the second cavity. The clean water enters the ceramic membrane 3 through the horizontal side wall and then flows out through the vertical side wall of the ceramic membrane 3, cleaning the impurities attached to the ceramic membrane 3. The water carrying the impurities enters the first cavity and is finally discharged from the main filter tank 2 through the sewage pipe 1.

[0034] like Figure 1As shown, pipe clamps 8 are installed on the right side wall of the main filter tank 2 and the top of the secondary filter tank 10. Connecting pipes 7 are inserted into the pipe clamps 8. The pipe clamps 8 are installed on the right side wall of the main filter tank 2 and the top of the secondary filter tank 10. Connecting pipes 7 are inserted into the pipe clamps 8 to fix the connecting pipes 7.

[0035] Example 2

[0036] This embodiment further illustrates the technology, such as Figures 1 to 4 As shown, there are four partitions 5, which are fixed to the inner wall of the main filter tank 2 and the ceramic membrane 3 respectively. The internal space of the partition 5 is the second cavity, and the cavity between the outer side of the partition 5 and the left and right inner walls of the main filter tank 2 is the first cavity. One end of the partition 5 is fixed to the inner wall of the main filter tank 2, and the other end is fixed to the ceramic membrane 3. The partitions 5 and the ceramic membrane 3 divide the internal space of the main filter tank 2 into the first cavity and the second cavity. The spaces on the left and right sides of the ceramic membrane 3 are the first cavities, and the left and right cavities are connected and communicate with each other, so that sewage can enter the ceramic membrane 3 from the vertical sidewalls on the left and right sides. The spaces on the upper and lower sides of the ceramic membrane 3, and between the partitions 5 on the left and right sides, are the second cavities, and the upper and lower cavities are connected and communicate with each other, so that sewage can enter the ceramic membrane 3 from the horizontal sidewalls on the top and bottom sides.

[0037] In this embodiment, after the sewage enters the main filter tank 2 through the inlet pipe 4, it remains in the first cavity. The sewage enters the ceramic membrane 3 from the left and right vertical sidewalls, then flows out from the upper and lower horizontal sidewalls of the ceramic membrane 3, and finally collects in the second cavity. It is then sent into the secondary filter tank 10 through the connecting pipe 7.

[0038] Example 3

[0039] This embodiment further illustrates the technology, such as Figure 1 As shown, a base 14 is installed at the bottom of the main filter tank 2. The height of the base 14 is equal to that of the secondary filter tank 10. The main filter tank 2 is fixed on the top of the base 14. The base 14 raises the main filter tank 2, so that the water in the main filter tank 2 after preliminary filtration is at a height difference with the secondary filter tank 10. Through the siphon effect, the water in the main filter tank 2 flows into the secondary filter tank 10 through the connecting pipe 7.

[0040] Example 4

[0041] This embodiment further illustrates the technology, such as Figure 1 As shown, the left end of the connecting pipe 7 is inserted into the bottom of the second cavity, and the left end of the connecting pipe 7 is vertically inserted into the main filter tank 2. The lower end of the connecting pipe 7 is located at the bottom of the second cavity, below the liquid surface of the pre-filtered water, so that the water in the second cavity flows into the secondary filter tank 10 through the connecting pipe 7.

[0042] like Figure 1As shown, the right end of the return water pipe 9 is inserted into the bottom of the third cavity, the water pump 13 is installed at the bottom of the left side wall of the auxiliary filter tank 10, and the right end of the return water pipe 9 passes through the water pump 13 and is inserted into the bottom of the third cavity, so as to facilitate the pumping of the clean water in the third cavity back into the main filter tank 2 for backwashing of the ceramic membrane 3.

Claims

1. A siphon filter for sewage treatment, comprising a horizontally arranged base plate (12), a main filter tank (2) installed on top of the base plate (12), and a secondary filter tank (10) installed on the right side of the main filter tank (2), characterized in that: The main filter tank (2) is located above the secondary filter tank (10). A ceramic membrane (3) is installed in the main filter tank (2) through a partition (5). The partition (5) and the ceramic membrane (3) divide the internal space of the main filter tank (2) into a first cavity and a second cavity. A filter assembly for secondary filtration of sewage is provided in the secondary filter tank (10). The filter assembly divides the internal space of the secondary filter tank (10) into a third cavity and a fourth cavity. An inlet pipe (4) is installed at the top of the first cavity. A sewage pipe (1) is installed at the bottom of the first cavity. A connecting pipe (7) is installed between the top of the second cavity and the top of the fourth cavity. A valve (6) is installed on the connecting pipe (7). A return water pipe (9) is installed between the bottom of the second cavity and the third cavity. A water pump (13) is installed on the side wall of the secondary filter tank (10). A clean water pipe (15) communicating with the third cavity is opened on the front side wall of the secondary filter tank (10).

2. The sewage treatment siphon filter according to claim 1, characterized in that: There are four partitions (5). The four partitions (5) are fixed on the inner wall of the main filter tank (2) and the ceramic membrane (3) respectively. The internal space of the partition (5) is the second cavity, and the cavity between the outer side of the partition (5) and the left and right inner walls of the main filter tank (2) is the first cavity.

3. The siphon filter for wastewater treatment according to claim 1, characterized in that: The filter assembly includes a filter screen (11), which has a ring structure and is vertically fixed inside the secondary filter tank (10). The internal space of the filter screen (11) is a fourth cavity, and the space between the outer wall of the filter screen (11) and the secondary filter tank (10) is a third cavity.

4. The sewage treatment siphon filter according to claim 1, characterized in that: The main filter tank (2) is equipped with a base (14) at the bottom. The height of the base (14) is equal to that of the secondary filter tank (10). The main filter tank (2) is fixed on the top of the base (14).

5. The sewage treatment siphon filter according to claim 1, characterized in that: The left end of the connecting tube (7) is inserted into the bottom of the second cavity.

6. The sewage treatment siphon filter according to claim 5, characterized in that: The right end of the return water pipe (9) is inserted into the bottom of the third cavity, and the water pump (13) is installed at the bottom of the left side wall of the secondary filter tank (10).

7. The sewage treatment siphon filter according to claim 1, characterized in that: The right side wall of the main filter tank (2) and the top of the secondary filter tank (10) are both equipped with pipe clamps (8), and the connecting pipe (7) is inserted into the pipe clamps (8).

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